On Jan. 1, 2019, alimony will no longer be tax-deductible by the spouse making those payments. Also, the recipient will no longer declare the payments as taxable income. Here, President Donald Trump is seen at the "MAGA Christmas" rally in Biloxi, Mississippi, on Nov. 26, 2018.(Photo: Sarah Warnock, Clarion Ledger)

On Jan. 1, alimony will no longer be tax-deductible by the spouse making those payments. At the same time, the recipient of what’s called spousal maintenance will no longer declare those payments as taxable income.

This provision will shrink the amount of money available for the split-up households because taxes will rise significantly for the spouse making the alimony payments.

The spouse receiving the payments, meanwhile, could see a windfall under the new rules because the payments will no longer be taxable on Jan. 1.

“The pressure is huge,” said matrimonial attorney Lisa Zeiderman, managing partner at Miller, Zeiderman & Wiederkehr of White Plains, on Tuesday. “Once the tax deduction is gone, there will be less money for the family unit. I’ve had emails and calls all morning from people who would like us to negotiate and set deadlines and put pressure, in some way, on their spouses, so we can get a deal done.”

How $100,000 payment would work

The federal tax treatment of alimony dates back to the early 20th century. In 1917, the U.S. Supreme Court ruled that alimony payments were not tax deductible. But that changed in the 1940s, when IRS rules allowed spouses to deduct those payments, said Jere Doyle, senior vice president of Bank of New York Mellon Wealth Management.

The change approved by congressional Republicans was needed to stem the loss to the federal Treasury to $1.5 trillion over 10 years. Removing the alimony deduction will save $6.7 billion – a pittance compared to almost $700 billion saved by the $10,000 cap on the deductibility of state and local taxes.

The stakes are high. It’s not unusual for high-end spouses to pay from $5,000 to $15,000 a month – or $60,000 to $180,000 a year in alimony. At look at how the tax law would treat annual payment of $100,000 in alimony is instructive.

Let’s say the spouse paying the alimony earns $300,000 a year, and pays federal taxes of 35 percent on any income earned over $200,000. Under current law, he can deduct the $100,000 that he pays in alimony, which cuts his tax liability by $35,000.

His wife would now pay taxes on the $100,000 in alimony, but at a lower rate, with her taxes coming to just $17,000. It's a way that federal tax law has softened the financial blow that divorce delivers when marriages dissolve.

The Trump tax law eliminated the tax break, so the IRS will receive $35,000 in tax from the husband – and nothing from the wife. That means Uncle Sam ends up with $18,000 more. That’s $18,000 less in joint income that the partners get to split up in the divorce negotiations.

"The pressure is huge," said matrimonial attorney Lisa Zeiderman, managing partner at Miller, Zeiderman & Wiederkehr of White Plains, New York, on Tuesday, Dec. 4, 2018. "Once the tax deduction is gone, there will be less money for the family unit."(Photo: Ricky Flores/The Journal News)

“We try to create value in the marital estate, with the shift in taxable income from the higher-earning spouse to the lower-earning spouse, with the premise that there would be more money for everyone,” said attorney Ken Novenstern. “All of a sudden, that’s all going away.”

With the lower-earning spouse – typically the wife – no longer having to pay income tax on alimony payments, her income would increase, if the husband still paid the same amount in alimony.

But advocates for women doubt that will occur. They say the loss of deductibility will complicate divorce negotiations, and could result in women receiving less than they do now because their spouses have less to give.

“The incentives for the monied spouse to be fair and generous have now been removed,” said Robbie Schlaff, director of Westchester County’s Office for Women.

"Women will be further impoverished," warned Carlla Horton, executive director of Hope's Door, a Westchester shelter for victims of domestic abuse.